CNN  —  At the Joseph Stalin Museum in Gori, the small Georgian town where the Soviet dictator was born, a line of guides is waiting to tell you the story of the local boy who made it big. They can list the birthdays of Stalin’s family and recite the poems he wrote as a schoolboy (for Stalin “could have been a poet, but chose to be a great leader”). But on other things, they are less exact. Of the millions killed in the gulag, “mistakes were made.” Of show trials, they have little to say. So